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Respiratory symptoms in European animal farmers
K. Radon, B. Danuser, M. Iversen, R. Jörres, E. Monso, U. Opravil, C. Weber, K.J. Donham, D. Nowak
European Respiratory Journal 17 (4) 747-754; DOI: 10.1183/09031936.01.17407470 Published 1 April 2001